[INFO] fetching crate playhead 0.0.3...
[INFO] testing playhead-0.0.3 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate playhead 0.0.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate playhead 0.0.3 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate playhead 0.0.3
[INFO] finished tweaking crates.io crate playhead 0.0.3
[INFO] tweaked toml for crates.io crate playhead 0.0.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ac8c0895509396401c554ab1a818b40ac64a57bb802aa5275a3cea462d609b0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9ac8c0895509396401c554ab1a818b40ac64a57bb802aa5275a3cea462d609b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ac8c0895509396401c554ab1a818b40ac64a57bb802aa5275a3cea462d609b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ac8c0895509396401c554ab1a818b40ac64a57bb802aa5275a3cea462d609b0", kill_on_drop: false }`
[INFO] [stdout] 9ac8c0895509396401c554ab1a818b40ac64a57bb802aa5275a3cea462d609b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8289e8030411c8916beb65c4c0fceeb5154ed2ebe5d4ab88fa87751af7d3145
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c8289e8030411c8916beb65c4c0fceeb5154ed2ebe5d4ab88fa87751af7d3145", kill_on_drop: false }`
[INFO] [stderr]    Compiling playhead v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "c8289e8030411c8916beb65c4c0fceeb5154ed2ebe5d4ab88fa87751af7d3145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8289e8030411c8916beb65c4c0fceeb5154ed2ebe5d4ab88fa87751af7d3145", kill_on_drop: false }`
[INFO] [stdout] c8289e8030411c8916beb65c4c0fceeb5154ed2ebe5d4ab88fa87751af7d3145
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c93a2843169d95189abc4b6303a5faab3c93f1a3f13b823ada784b9358915e62
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c93a2843169d95189abc4b6303a5faab3c93f1a3f13b823ada784b9358915e62", kill_on_drop: false }`
[INFO] [stderr]    Compiling playhead v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `start_time`
[INFO] [stdout]   --> tests/test_play_head.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let start_time = ph.time();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_time`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> tests/test_play_head.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     for num in 0..number { // change it to get range
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `play_pause`
[INFO] [stdout]   --> tests/test_play_head.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn play_pause(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let a = ph.instant.elapsed().as_millis();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "c93a2843169d95189abc4b6303a5faab3c93f1a3f13b823ada784b9358915e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c93a2843169d95189abc4b6303a5faab3c93f1a3f13b823ada784b9358915e62", kill_on_drop: false }`
[INFO] [stdout] c93a2843169d95189abc4b6303a5faab3c93f1a3f13b823ada784b9358915e62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bba91ede67f7306fcb3760fdb409dabf5e07dafad168dfdb39e153131c78ac15
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bba91ede67f7306fcb3760fdb409dabf5e07dafad168dfdb39e153131c78ac15", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stdout] running 3 tests
[INFO] [stderr]   --> src/lib.rs:83:13
[INFO] [stdout] test test::check_initial_values ... ok
[INFO] [stderr]    |
[INFO] [stderr] 83 |         let a = ph.instant.elapsed().as_millis();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start_time`
[INFO] [stderr]   --> tests/test_play_head.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let start_time = ph.time();
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_time`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]   --> tests/test_play_head.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     for num in 0..number { // change it to get range
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `play_pause`
[INFO] [stderr]   --> tests/test_play_head.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn play_pause(){
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/playhead-3fedadc1af05870a)
[INFO] [stdout] test test::stop ... ok
[INFO] [stdout] test test::play ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_play_head.rs (/opt/rustwide/target/debug/deps/test_play_head-b4dad97a48bfc4c5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test start ... ok
[INFO] [stdout] test two_times ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests playhead
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bba91ede67f7306fcb3760fdb409dabf5e07dafad168dfdb39e153131c78ac15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bba91ede67f7306fcb3760fdb409dabf5e07dafad168dfdb39e153131c78ac15", kill_on_drop: false }`
[INFO] [stdout] bba91ede67f7306fcb3760fdb409dabf5e07dafad168dfdb39e153131c78ac15